The Nitecore SRT9 is the latest light in the Smart Ring series of lights from Nitecore. It offers 8 different modes of light, including Red, Blue, Green, and UV led’s in addition to the main cool white Cree XHP50 LED. The [Nitecore SRT9]-https://goo.gl/qSmr7B was provided by https://bestlight.io Use code LIQUID and save 10% off your orders at https://bestlight.io/ including the Nitecore SRT9
Video Review https://youtu.be/BAJyr8pWEQg
Image Gallery Full – http://imgur.com/a/7F7gO
This entire light feels super solid, like it’s built like a tank. The walls where the cells are is pretty thick machined aluminum. The exterior design feels rugged and with all the cutouts it holds well in the hand. The body design isn’t too aggressive to tear up a hand or pocket. The head is more aggressive. I like how the labeling is minimal on this light too. The anodizing is good and even. It has a bit of a gloss to it.
This isn’t a small or lightweight flashlight. The side by side battery design I really like. It help keeps the light from getting too long and fits nicely in my hand. That said with batteries it’s pretty heavy at 11.4oz.
The head has some nice cooling fins on it as well as a warning to warn that it gets hot. The very front is steel bezel and finished with a silver paint/anodizing. The lense is recessed a bit for protection. The reflector itself has a light orange peel and then but outs for the 4 colored LED’s. I will go over beam pattern a bit later.
The tail cap is also very solid feeling. The latching mechanism takes some getting used to. https://youtu.be/BAJyr8pWEQg?t=2m21s You have to push both buttons/pins in at the same time to get the tail out while pulling. Even with practice it takes me a little bit. I find pushing them back in produces a very satisfying click and is easier. Don’t worry about this coming off accidentally, I just don’t see that happening. The bad is that there are no polarity markings on the tail cap, exterior, or interior of the flashlight. You can put batteries in backwards in this light. While there is reverse polarity protection it would be good if Nitecore would have put markings or keyed the tail cap in a way so it only goes in one direction.
This light is listed as having a beam distance of 246M, impact resistant to 1.5M, IPX8 water resistant.
This light uses a Cree XHP50 LED. It’s a quad package and pretty large die size.
It’s only available in a cool white tint for this light. Nitecore lists its range in this light as 0.1 lumens to 2150 lumens. In my testing and comparison to other lights 0.1 lumens isn’t accurate, I would put it more at 4-5 lumens. The UV LED is listed as having a 365nm light output. It’s not the brightest UV available. I am used to my Convoy S2+ UV being so strong. I think the best use for the UV is to check documents and money and also spot scorpions in your general vicinity while hiking. Red is listed at 13 lumens, green at 19, and blue at 3 lumens. When I tested the UV LED on money I got some interesting results.
On the US $20 bill both the SRT9 and Convoy S2+ UV lit up the security strip without a problem. However on the $100 bill the SRT9 didn’t show the strip, and the Convoy did. Not sure why, maybe the wavelength isn’t complete?
The Selector ring is how you change modes in this light. First you have an on off click button in the rear of the light which can be used for momentary operation. When on there is a blue LED on the side of the light that illuminates to let you know it’s on. It lights up about every 3 seconds. The reason this is there is because the light can be in on mode but you can have the selector ring in the “off position”. This also serves as a low voltage indicator when the light is on. The main selector ring is near the head of the light in a natural position when holding it in your hand. When in this off position if you move the ring to the right you feel a detent and then it starts ramping up the light. This allows you to dial in the exact amount of light you want or need. It’s a cool system. There is a detent at the top of this mode to let you know it’s reached the highest amount. Beyond this there is a fast strobe. Now if you turn the selector right to the left from the center position you get UV, followed by Red, green, blue, strobing Red/Blue, then White beacon mode. Color modes are not adjustable in brightness.
One thing I wish Nitecore would improve on the SRT9 is add some markings on the selector ring to index it. I plan to add a dot of white paint on the ring and body of the flashlight in the middle of the modes. That way I know if I turn to the left I get the colored modes, and if I turn to the right I have the ramping of the main flashlight.
Beam Patterns of this light are a little different. In white mode I was expecting distortion due to the cut outs for the color LED’s however it doesn’t really have one. https://youtu.be/BAJyr8pWEQg?t=8m39s The center is hot with plenty of spill. Nitecore claims this will go 245m and I could easily get it go 200. The color modes however each have significant distortion. You notice it the least on the UV color but Blue, Green, and red all have a lot of distortion and don’t always shine to the center. Run times vary due to all the different configurations available. On 18650 batteries nitecore quote the color modes as lasting for 48 hours, and white, on ultra low 250hrs, turbo for 1 hour.
This light can run on 4x CR123A or 2x 18650 batteries which is my preference for cost and runtime. I only had luck getting this light to run on button top cells. The unprotected flat tops I tried didn’t work. You can’t use magnets to create button tops for flat tops on this light due to the magnetic interference with selector ring.
This light does have a constantly running processor according to the manual. I measured the drain at 12.2mA. When I put this light through my standard 1 minute on Turbo it got to 90F degreese. When I was using it this weekend I found heat to be pretty well controlled and it didn’t feel too hot to hold especially for it’s output.
Packaging is standard Nitecore black and yellow box. Outside has a very retail look to it. Inside you get a plastic tray with the light, lanyard, holster, manual and an extra tail cap rubber piece. The holster is a nice heavy nylon thats shaped to fit this exact light. On the back it has a pretty heavy duty plastic D ring and a velcro belt strap. The front attaches with velcro. It’s decent quality.
The clip is a bit of an afterthought on this light. It’s nearly in the middle, and mounted so the head is up always. and at least on mine it’s not tight to the body. Given this light’s size I don’t see this as an EDC light. I don’t think I will remove mine because I do see some value in being able to clip it onto a pocket temporarily but I think I will use the lanyard for a more secure hand hold.
Over the weekend I took the SRT9 with me to a Milky Way photography class I went to. It turns out this isn’t the best light for that because it ended up being a bit too bright in red mode, and moon light was brighter than I was hoping for. However after everyone was done I played with it more and found it great to move between sites, and pack up the car etc. People including myself were impressed at how far it could throw. To me the best feature on this light is the selector ring. It works really well and makes it super intuitive to use. The colors and modes make this a very versatile light. I think it’s my favorite light in July.
- I really like the selector ring interface
- This light feels like it’s built like a tank.
- White beam pattern is good considering the cuts in the reflector. It throws pretty well.
- It’s nice to have a light with some color options and a great interface to access them.
- No polarity markings in the battery compartment. Read the springs on the bottom. Spring = Negative
- I wish there was an external visual indicator for the beginning of the ramp.
- Ultra low doesn’t seem to be the 0.1 lumens advertised.